在圆上选取n个点,两两连线,最多可以在圆内形成多�个交点? 知乎 Template




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Try and sketch some of theseLounge, Bamboo, Mountain goat, Noose, Sunhat, Pickle, Electric fan, Gown, Sandbox, Cafeteria, view more ideas


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tomski在圆上选取n个点,两两连线,最多可以在圆内形成多�个交点? 知乎 coloring